Space-Time Standards Laboratory
Space-Time Standards Laboratory

Space-Time Standards Laboratory

Space-Time Standards Laboratory Website

The Space-Time Standards laboratory has been developing technologies for the generation, comparison and dissemination of accurate time and frequency as the basis for communication technology and metrology.

First, as a fundamental technology to support life and industry, we are continuously generating and providing Japan Standard Time with high stability. Atomic clocks are the source of accurate frequency to maintain such a stable standard time. We develop Cs primary frequency standards, which realize the definition of the second, but we also carry out research on the most advanced optical clocks which can detect even tiny relativistic effects. To utilize optical clocks, high-precision measurement technology and transmission technology are essential. We are developing time and frequency transfer techniques on a global scale by utilizing satellites and radio stars. Moreover, we provide standardization technology for new research fields, e.g. in the THz domain.

Driven by our research mission, we will contribute to the development of national standards for infrastructure and advanced measurement technology.

Director : Tetsuya Ido

Japan Standard Time System

Japan Standard Time System

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